Track sanding device



Feb. 5, 1935. p SCHN@ 1,990,253

TRACK SNDING DEVICE Filed Dec. 2, 1952 through .causes notunderft vitar part PatentedFeb.A 5, 1935 Mylinventionrelates .toirnpreyeinents 1w track `sawing-iraicesfoftheftyfpe in which theesandis ereleased .fromHa v-storhageibin, electrically l.operated fdispensingfineohmirl.

The principal object of the inventigndgsciprgs 1-vicieanlimproifedtrack sanding device ef thetype p concernedA vwhich. .is alwaysgready ,0111 insiantanef ous Ause which f consists,nfY :onl etv .partey otiextremely simple design andlwlfiichjcambejmnnu- .fractured and ,ntted i onY ychicles.I silclias;` railroad and tram ,cars, .also7 yon :travelimgi ccranesfetc. at

- relatively low cost.

The invention .further y aims A'at 're-designing thepsandingdevice-concerned that liwill 11evquire little supervision 4 ar1il fvvilL ;yet;N give y service runder; conditionsfoi usage;

againstbecoming-accidentally 'clggged y, v y

reliable .tinge out pair.

Otherobjectsl-oifthe invention will become incid'entally' apparent hereinafter to practioners conversant with the working of track sanding devices which are on duty under adverse conditions.

The nature and scope of the invention are briefly outlined in the appended claims and will be more fully understood by the following specication taken together with the accompanying drawing in which a track sanding device exhibiting the salient features of the invention is diagrammatically shown by way of an example.

In the drawing y designates a substantially vertically disposed receptaclebin or tank-for storing sand Which can be fed into the latter through an intake port provided in a protecting cover 11 and being closed by a hinged lid 12.

The sand storage bin 10 is formed with a conical bottom and a discharge port centrally positioned therein.

Closely underneath said discharge port and coaxially thereto a sand dispensing tray 22 is yieldingly arranged in such position, thai'I intermediate the discharge port and the'tray there is a gap always open for the passage of the sand.

In the embodiment of the invention shown by way of an example the tray 22 is cone or cup shaped and has an annular edge which outwardly and upwardly yprojects relatively to said discharge port to an extent as to cause the sand to spontaneously stay on the tray, While the latby @n provided ior actuating,Y saidfdispensingctrawm:

"mechanism indicated at 32,V

einem -14 (or eer-g2g);

Powerppeliated vibrating.,oriesliakilfle Jrieansfare .In ther emb odi-mentoithe inventionx s hownfin the drawing by way of an example said .vibrating means comprise Y e l `(l) Anielectromagnetically,operated hammer 31,Wnienis free to speedily-@scalate.Wahine.s01- -envoidi30and ,which operates a crcuitbreaking A.

of `known design,L diagrammatically (2l A power transrnissionf .rod 2l having Iatits a ter fis at rest.,and,ato=flowoven the-` annular edge E 'l of said vgtray. iwhi-lev thelatter iS Nibrated. l

upper, end Aan anvilA 23 and having yattached .to

its y,lower endihe said dispensing `.tray 22,

(3)"V A'supporting member-l adapted. ttol yieldingly, sup-port the said power 4transmission `rod 21 and the @dispensing tray .22."

' Asindicated in the drawing I preferr` to use as vsupporting member ahighly elastic and resilient plate or membrane yat the centre of Whichjthe anvil `23 Yof rod 21, is -iastenedfortinstance by welding or,throughclamping screwsinot shown) 22-to` freely oscillate or vibrate up and "down Without the aid of ani7 guiding or bearing members whatever which would require lubrication or be subject to rapid wear. e

Another advantage is obtained by theuse of a resilient membrane as a'supporting element and securing the latter to the upper rim of the bin 10 as indicated 'in the drawing. The vibrations of the membrane 20 are directly imparted to and will spread all over the side walls of the bin with the result that bridging of the sand within the latter which would interfere with the proper ow of the sandvthrough the discharge port is effectively prevented.

The generation and propagation of vibrations throughout the side walls of the bin 10 may be further enhanced by supporting the bin exclusively at its upper rim, as diagrammatically--indlcatecl in the drawing.

The operation of the track sanding device shown and described above is as follows:

By closing the electric circuit at 35, theoperator sets to work the oscillating hammer 3l; by the impacts of the latter upon anvil 23 the membrane 20, transmission rod 2l and dispensing tray andlast but not least-the bin 10 are violently vibrated with the result that the sandv passes in a continuous current through the discharge 'port ofthe bin and is thrown off the tray 22.

'I'he dispensed sand is collected in` a funnel 40 vand delivered to the rails or -trackvupon which the wheeled vehicle runs through a pipe 41. While the device isvnot in operation` the tray-22 and the sand resting-on it act as a closure for the bin and check the flow of the sand out o!y the former. y j

Various changes and modifications` may be f made inthe designandstructural details of the improved track sanding device shown and described hereinbefore, without substantially deviating from the spirit and the salient features Jof the invention.

' f form a gap for the passage'of the sand, and havj `ing an annular edge, which outwardly projects For instance instead of a` solenoid 30 and an oscillating hammer 31 a rotary vibrating mechanism operatedby electricityor other power may be adopted to suit special requirementsyf-v-the membrane 20 may be replaced by another' resilient supporting means-for instance adjustable wire springs. Y vu A tubular powerk transmission; element ,ofi light Weight such as a pipe fand a cup shaped-tray`V or la at tray having an upturned circumferential rim'may rbe substituted for rodf21 and the `coni-- -caltray 22 shown the drawing by way of an fexample. e

bin having aconical bottom and a discharge port centrally positioned therein, a sand vdispensing tray, yieldingly arranged closely underneaththe said discharge port coaxially thereto, so as to relatively to said dischargexport to an extent as to cause the sand issuing through saidV gapto remain on the tray forming a seal to closeA the opening between the discharge port andA the tray, while the latter is at rest, and to flow overA said annular edge of thev tray, while the latter isA vi-l lbrated, and means for vibrating said tray.

2. In a track sanding device, a ,sand storage bin having -a' conical bottom and a discharge port y `centrally positioned therein, a sand dispensing tray, yieldingly arranged closely underneath the l' n. l '1,990,2:53 Y

said discharge port coaxially thereto, so as to `tercyzpnnecting said hammer and tray.

3. Inra track sanding device, a sand storage bin havinga conical bottom anda discharge port centrally positioned therein, a sand dispensing tray, yieldingly arranged closely underneath the y said t discharge 'port' coaxially thereto, so as to form a gap for the passage of the sand, and having an" annular edge, which outwardly'projects relatively to said discharge port to; an extent as to cause the sand issuingthrough said gap torre- 'main on the tray, while thelatter isv atv rest, and f to iiow over said annular edge of` thel tray, While the latter is vibratedjand means for y'vibrating the said tray and bin.'

4. ,Inv a track sanding device, a sandstorage 'bin having a conical bottomand a discharge port centrally positioned therein, a sand 'dispensing tray, yieldingly'arranged closely underneath the lsaid discharge port coaxially thereto, so as' 'to form a gap for the passage of the sand, and hav# ing an annular edge, which outwardly' projects relatively to said dischargelport'tol-'an extent as to cause the sand issuingthrough said gap to remain on the tray, while the latter isat rest, and to-flow over lsaid annular edge of Y thel tray, while the latter is vibrated'and means :for vibrating the f said tray" and bin-said vibrating `means comrprisng an electromagneti'callyv operated 'oscilla' tory hammer, a power transmission rodl cooperatively interconnecting said hammer and tray,

and a resilient loridgeplate,VV cooperatively inters' connecting said power transmission rod andthe j bin.

y PAUL SCHNIG. 

